But after a night of cool reflection they began to repent of their haste. It was a cruel and monstrous thing, they now thought, to butcher the population of a whole city, innocent and guilty alike. The Mytilenaean envoys, who had been sent to Athens on the surrender of the city, perceived that there was a change in the public temper, and acting in concert with influential Athenians who were in their interest, they induced the magistrates to summon a second assembly, and re-open the debate.
It is on this occasion that we first catch sight [Footnote: That is, in the narrative of Thucydides.] of the notorious demagogue Cleon, who for the next six years will be the most prominent figure in Athenian public life. This man belongs to a class of politicians who had begun to exercise great influence on the affairs of Athens after the death of Pericles. That great statesman had really led the people, checking their excesses, setting bounds to their ambition, and guiding all the moods of the stormy democracy. But the demagogues were lowborn upstarts, who, while seeming to lead the people, really followed it, and kept their position by pandering to the worst passions of the multitude. It must, however, be mentioned that the two contemporary writers from whom we draw our materials for the portrait of Cleon, the historian Thucydides and the comic poet Aristophanes, were both violently prejudiced against him. Aristophanes hated him as the representative of the new democracy, which was an object of abhorrence to the great comic genius; and Thucydides, a born aristocrat, of strong oligarchical sympathies, looked with cold scorn and aversion on the coarse mechanic, [Footnote: Cleon was a tanner by trade.] who presumed to usurp the place, and ape the style, of a true leader like Pericles.
In the previous debate Cleon had been the chief promoter of the murderous sentence passed against Mytilene; and when the question was brought forward again, he made a vehement harangue, the substance of which has been preserved by Thucydides. In this speech he appears as a practised rhetorical bravo, whose one object is to vilify his opponents, and throw contempt on their arguments, by an unscrupulous use of the weapons of ridicule, calumny, and invective. He reproaches the magistrates for convening a second assembly, in a matter which had already been decided; and this was, in fact, strictly speaking, a breach of the constitution. He laughs at the Athenians as weak sentimentalists, always inclined to mercy, even when mercy was suicidal. Of the subject communities he speaks as if they were mere slaves and chattels, outside the pale of humanity, to be kept down with the scourge and the sword. "Let the law prevail," cries this second Draco. "The law is sacred, and must not be moved. You are so clever that you will not live, by fixed rule and order, and you deride the approved principles of political wisdom. Every one of you wants to be a lawgiver, a statesman, and a reformer, and to manage the public affairs in his own way. We, who understand your true interests, are bound to resist this mood of lawless extravagance, and keep you in the right path, whether you will or no."